JPH0974971A - Thermal transpiration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability of a thermal transpiration device and reduce the production cost by enabling to control the insertion depths of a heat generator and a liquid-sucking core with the reduced number of parts without transferring the heat generator. SOLUTION: This thermal transpiration device 73 comprises a container- attaching member 39 to which a liquid container 21 having a liquid-sucking core 25 outward projected from a container filled with a liquid 23 and immersed in the liquid 23 in the container is attached, a plug 27 attached to the container- attaching member 39 and capable of being attached to or detached from a plug socket 29, an outer container 33 attached to the container-attaching member 39 through a rail member 65 and capable of being slid toward the central axis of the liquid-sucking core 25, and a heat generator 31 attached to the outer container 33 and capable of heating the liquid-sucking core 25 outside the liquid container 21 to vaporize and transpire the liquid 23 from the liquid-sucking core 25, when an electric current is applied to the heat generator from the plug socket 29 through the plug 27 attached to the outer container 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating evaporation device for evaporating and evaporating a liquid such as a drug, and more specifically to a liquid such as a drug contained in a liquid container by heating an absorbent core with a heating element. It vaporizes and evaporates.

[0002]

2. Description of the Related Art In a heating evaporation device, a part of an absorbent core is inserted into a liquid container, and the absorbent core is heated by a heating element near the absorbent core outside the liquid container to vaporize the liquid in the liquid container.・ There is something to be evaporated. In this type of heating evaporation device, it is possible to adjust the evaporation amount.
No. 6 publication. In the one disclosed here, by inserting the adjustment ring into the screwed portion of the liquid container,
A structure for changing the position of the liquid absorption core with respect to the heating element, a structure in which the liquid container and the outer container are screwed together, and a structure for changing the position of the liquid absorption core by rotationally adjusting the liquid container, and a height at the bottom of the liquid container. Different holders are replaceable, the position of the liquid absorption core is changed, and the liquid container is placed on the holder, and a cam groove is formed on the side wall of the outer container on which the heating element is fixed. There has been proposed a configuration in which the position of the liquid absorption core is changed by causing the holding table on which is mounted in stepwise engagement with the cam groove.

Further, in the conventional heating evaporation device shown in FIG. 7, a through hole 3 is formed in the upper part of the outer container 1, and a spiral groove 5 is formed in the inner periphery of the through hole 3. At the center of the through hole 3, a liquid absorbing core 9 protruding from the liquid container 7 held at the lower portion of the outer container (not shown) is arranged. A ring-shaped heating element 13 having a spiral convex strip 11 which is screwed with the concave groove 5 is formed on the inner periphery of the through hole 3 and is screwed to the heating element 13.
Has the absorbent core 9 arranged with a gap in the central hole 15. The heating element 13 is rotatable by a picking member 17 having a transpiration port 16. Then, when the knob member 17 is rotated, the heating element 13 is moved to the through hole 3
It was screwed up and down with the concave groove 5 and the insertion depth of the liquid absorbent core 9 could be adjusted by the amount of movement.

In any of the conventional heating and evaporation devices as described above, the heating area of the liquid absorption core can be changed by changing the insertion depth of the heating element and the liquid absorption core, and the amount of evaporation can be adjusted. It was like this.

[0005]

However, in the structure using the adjusting ring and the holding base, the user has to attach and detach these members, and the management thereof is complicated and the usability is poor. . If these separate parts are used, there is a problem that the number of parts increases and the cost increases. Further, in the structure in which the liquid container and the outer container are adjusted by screwing, there is a problem that the attaching / detaching operation of the liquid container becomes complicated. Further, in the structure in which the holding table on which the liquid container is placed is engaged with the cam groove to adjust the movement, it is difficult to obtain the engagement accuracy of the cam portion, and there is a possibility that the heat generating element and the liquid absorbing core are misaligned. There was also

On the other hand, in the heating evaporation device shown in FIG. 7, the insertion depth between the heating element 13 and the liquid absorbent core 9 can be adjusted accurately, but since the heating element 13 must be movable, it is excessive for the user. When a large operating force is applied, the heating element 13
Might contact an outer container made of resin or the like. Further, since the heating element 13 is screwed into the through hole 3, the heating element 1
Since 3 has a special structure and the knob member 17 for rotating the heating element 13 has to be configured by another member, the manufacturing cost is increased and the number of parts is also increased. Further, in this example, since the heating element 13 rotates in the through hole 3, the power supply wiring 19 (see FIG. 7) to the heating element 13 must be embedded in the outer container, which complicates the wiring. There was a problem.

The present invention has been made in view of the above situation, and provides a heating evaporation device in which the insertion depth of the heat generating element and the liquid absorbing core can be adjusted with a small number of parts without moving the heat generating element. The purpose is to improve productivity and reduce manufacturing costs.

[0008]

In order to achieve the above-mentioned object, the constitution of the heating evaporation device according to the present invention is such that it is filled with liquid and provided so as to project from the inside of the container to the outside of the container and is immersed in the liquid in the container. A container mounting part to which a liquid container having a liquid absorption core is mounted, a plug fixed to the container mounting part and detachable from an outlet, and a center of the liquid absorption core mounted on the container mounting part via a guide part. The outer container that is movable in the axial direction and the outer container that is fixed to the outer container and is energized from the outlet via the plug is heated near the liquid absorption core outside the liquid container to vaporize the liquid from the liquid absorption core. It is provided with a heating element for evaporating.

When the plug is inserted into the outlet, the heating element is energized to generate heat, and in this state, when the outer container is vertically moved with an appropriate force, the outlet is inserted through the plug. The outer container is moved via the guide part with respect to the container mounting part supported by the insertion part, so that the insertion depth between the heating element fixedly mounted on the outer container and the liquid absorption core mounted on the container mounting part. Will be changed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a heating and evaporating apparatus according to the present invention will be described below in detail with reference to the drawings.
1 is a sectional view of a heating evaporation device according to a first embodiment of the present invention, FIG. 2 is a plan view of the heating evaporation device of FIG. 1, and FIG. 3 is a sectional view of a heating element provided in the heating evaporation device of FIG. is there.

A liquid medicine 23 in the liquid container 21
The liquid-absorbent core 25 dipped in the liquid container 21 is heated at its upper portion protruding outside the liquid container 21 by a heating element 31 energized from an outlet 29 via a plug 27, and the medicine 23 or the like contained in the liquid container 21 is discharged. Is evaporated near the upper part outside the liquid container 21. The chemicals 23 evaporated in the vicinity of the upper part of the liquid absorbent core 25 are evaporated above the outer container 33 from the evaporation port 35 provided on the upper surface of the outer container 33.

The liquid-wicking core 25 is provided in the center of the liquid container 21 in a substantially vertical state, and the lower half of the liquid container 2 is the liquid container 2.
While being immersed in the drug 23 in 1 and the upper part thereof is projected upward from the liquid container 21, it is inserted into the central portion of the heating element 31 formed in an annular shape in plan view. Examples of the material of the liquid-absorbent core 25 include felt, cotton, pulp, non-woven fabric, asbestos, and inorganic moldings, but felt cores (including sintered cores made of a resin such as polyacrylic), unglazed cores (ceramic cores). ), Pulp cores or inorganic molded cores are preferably used.

The liquid container 21 can accommodate liquid medicines 23 such as insecticides, bactericides, acaricides, repellents, fragrances, deodorants, pharmaceuticals or cosmetics, etc. Have. A male screw portion 37 is formed on the outer peripheral surface of the upper portion of the liquid container 21, and this male screw portion 37 is attached to the container mounting portion 39.
The liquid container 21 is detachably supported by the container mounting portion 39 by being screwed into the female screw portion 41 formed on the. Further, the outer peripheral surface of the body portion of the liquid container 21 is engraved with a scale 24 corresponding to the insertion depth of a liquid absorption core, which will be described later, which indicates the amount of the liquid chemical evaporated.

The heating element 31 is provided at the center of the upper portion inside the outer container 33, and has a plug 29 and an outlet 29.
When it is energized from above, heat is generated and the upper part of the liquid absorbent core 25 inserted into the central part from below is heated. Heating element 31
Examples include those using nichrome wires, semiconductors (positive temperature coefficient thermistors), and the like. The heating temperature of the liquid absorbent core 25 by the heating element 31 may be appropriately determined according to the type of the chemicals 23 to be evaporated, and is not particularly limited, but usually the surface temperature of the heating element 31 is about 40 to 200 ° C. Moreover, the surface temperature of the liquid absorbent core 25 is set to 30 to 185 ° C., and preferably the surface temperature of the heating element 31 is 60 to 14 ° C.
The surface temperature of the liquid-wicking core 25 is 40 to 130 at 5 ° C.
It is set to be ° C.

As a specific structure of the heating element 31, for example, as shown in FIG. 3, a positive temperature coefficient thermistor 45 connected to the electrode 43 is used as a heat source. Electrode 43
Is fitted into the connection terminal 49 of the socket portion 47 fixed to the outer container 33, and is electrically connected to the plug 27 via the power supply wiring 51. The thermistor 45 is embedded in the case 53 with a silicon-based filler 55. The thermistor may be fixed by other fixing means including a structural one instead of the silicon-based filler. An annular radiator 59 is fixed to the case 53 so as to close the opening 57 formed in the side wall. The case 53 is made of, for example, PPS resin, and the radiator 59 is made of, for example, aluminum, stainless steel, or copper.

In the heat generating element 31, the heat radiating body 59 is heated by the heat generated from the thermistor 45, and the liquid absorbing core 25 arranged in the central portion of the heat radiating body 59 is efficiently heated from the surroundings. At the lower end of the container mounting portion 39 is the plug 2
7 parts are integrally formed, the plug 27 is an outlet 29
When the liquid container 21 is mounted, the container mounting portion 39 is supported on the outlet 29 side by being inserted into. The container mounting portion 39 and the outer container 33 are formed separately.

On the entire outer circumference or a part of the outer circumference of the container mounting portion 39, there are provided first uneven portions 63 in which uneven portions are formed alternately in the vertical direction. On the other hand, inside the outer container 33, a guide portion 65 is provided which supports the outer periphery of the container mounting portion 39 so as to be vertically movable. As a supporting structure for the container mounting portion 39 and the guide portion 65, for example, the guide portion 65 is concave in horizontal sectional shape, and an arm portion engaging with this concave portion is provided in a part of the outer periphery of the container mounting portion 39. Alternatively, a structure is conceivable in which at least two guide portions 65 are formed in an arc shape and the outer circumference of the cylindrical container attachment portion 39 is sandwiched so as to be slidable in the vertical direction.

The guide portion 65 is provided with a second uneven portion 67 in which uneven portions are alternately formed in the vertical direction, and the second uneven portion 67 comes into contact with the first uneven portion 63. The first concave-convex portion 63 and the second concave-convex portion 67 are slidable in a juxtaposed direction of the concave-convex portions, that is, in the vertical direction by applying an appropriate force. In other words, the movement of the first concavo-convex portion 63 and the second concavo-convex portion 67 is normally restricted by the contact of the concavo-convex portion, but when an appropriate external force is applied, elastic displacement of the concavo-convex portions causes vertical movement. It is possible to slide to.

Several concave and convex portions are formed in the vertical direction, respectively. Therefore, the first concave and convex portion 63 and the second concave and convex portion 67 may be clicked in the vertical direction in several steps so that the concave and convex portions are moved moderately. It has become. Further, a stopper portion 69 is provided at the lower end of the guide portion 65, and the stopper portion 69 comes into contact with the container mounting portion 39 to regulate the downward movement range of the container mounting portion 39. Further, the outer container 33 is provided with a stopper pin 71, and the stopper pin 71 is used for the container mounting portion 3.
The upward movement range of 9 is regulated.

Therefore, the heating element 31 fixed to the outer container 33 side and the liquid absorbent core 25 fixed to the container mounting part 39 side are slidably moved by the guide part 65 between the container mounting part 39 and the outer container 33. By doing so, the insertion depth can be changed. The insertion depth is such that the container mounting portion 39 is the stopper portion 6
9 is the shallowest when it comes into contact with 9, and the deepest one when the container mounting portion 39 comes into contact with the stopper pin 71, that is, the state in which the upper end surface of the upper part of the liquid absorption core 25 is projected above the radiator 59. Becomes The insertion depth can be confirmed by the scale 24 formed on the outer peripheral surface of the body of the liquid container 21. The scale 24 shows how much of the liquid medicine is evaporated according to the insertion depth. For example, “many”, “normal”,
You can write "small".

In the heating / evaporating apparatus 73 thus constructed, the plug 27 is inserted into the outlet 29 so that the heating element 31 is connected to the outlet 2 via the power supply wiring 51.
9 is energized to generate heat. In this state, the outer container 3
When 3 is moved up and down with an appropriate force, the outer container 33 is moved stepwise via the guide portion 65 with respect to the container mounting portion 39 supported by the outlet 29 via the plug 27. Becomes As a result, the insertion depth between the heating element 31 fixed to the outer container 33 and the liquid absorbent core 25 is changed, and the area to be heated of the liquid absorbent core 25 is changed, so that the evaporation amount is adjusted. Becomes

The heating evaporation device 73 according to the first embodiment.
According to the above, while the container mounting portion 39 and the plug 27 are integrally formed, the outer container 33 is formed separately from the container mounting portion 39 and the plug 27, and the container mounting portion 39 and the outer container 33 are vertically arranged via the guide portion 65. Since it is slidable freely, the insertion depth of the heating element 31 and the liquid absorbent core 25 can be changed by operating only the outer container 33 while the plug 27 is still inserted in the outlet 29. The amount of transpiration can be adjusted extremely easily (with one touch).

Since only two parts, the container mounting portion 39 and the outer container 33, need to be divided to form the slide mechanism, the number of parts can be reduced.

Further, unlike the conventional heating element moving structure shown in FIG. 7, it is not necessary to configure only the heating element with a movable special part, and the knob portion which is a separate member is not required. Can be simple. Furthermore, since the heating element 31 is fixed to the outer container 33, only the heating element does not move alone, and the risk of bringing the heating element into contact with other members can be reduced.

Since it is not necessary to rotate the heating element as in the conventional heating element moving structure shown in FIG. 7, the wiring structure is complicated, for example, the power supply wiring is embedded in the outer container 33. You don't have to.

Next, a second embodiment of the heating evaporation device according to the present invention will be described with reference to FIG. FIG. 4 is a partial sectional view of a heating evaporation device showing a second embodiment. In this heating evaporation device 75, for example, three concave grooves 77 are formed in the guide portion 65 at equal intervals in the vertical direction. Also, the guide section 6
One protrusion 79 is provided on the outer periphery of the container mounting portion 39 facing the container 5.
Is protruding. The concave groove 77 and the protrusion 79 are brought into contact with each other and an appropriate force is applied thereto, so that the concave groove 77 can be slid in the juxtaposed direction, that is, in the vertical direction. That is, the movement of the concave groove 77 and the protrusion 79 is normally restricted by abutment, but when an appropriate external force is applied, the concave groove 77 and the protrusion 79 are elastically displaced,
It is possible to slide up and down. Other structures are
It becomes the same as the above-mentioned heating evaporation device 73.

According to this heating evaporation device 75, since one projection 79 formed on the outer periphery of the container mounting portion 39 is brought into contact with the concave groove 77 formed in the guide portion 65, the concave groove 77 and the projection 79 are formed. The sliding movement force between and becomes small and the operation becomes easy. Further, since the contact surface between the guide portion 65 and the outer periphery of the container mounting portion 39 can be brought into surface contact, it is possible to easily improve the dimensional accuracy as compared with the case where all the surfaces are in contact with each other by the uneven portions. Rattling between the outer container 33 and the container mounting portion 39 can be reduced.

Next, a third embodiment of the heating evaporation device according to the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of a heating evaporation device showing a third embodiment, and FIG. 6 is an enlarged view of a guide portion of the heating evaporation device shown in FIG. In this heating evaporation device 81, the plug 27 is integrally formed in the lower portion of the outer container 83. On the other hand, the container mounting portion 85 is formed separately from the outer container 83. On the inner circumference of the outer container 83,
At least two guide portions 65 having the same horizontal sectional shape as the above are provided. The guide portion 65 holds the outer periphery of the container mounting portion 85 so as to be vertically movable. Note that the guide portion 65 may sandwich an arm portion projecting from the outer periphery of the container mounting portion 85 so as to be slidably movable.

On the surface of the guide portion 65 facing the container mounting portion 85, a large number of small recessed grooves 87 shown in FIG. Further, on the outer peripheral surface of the container mounting portion 85 facing the guide portion 65, an elastic locking piece 89 protruding outward is formed by cutting and raising a part of the outer peripheral surface. One end 89a of the elastic locking piece 89 is a free end, and is elastically displaceable in a direction projecting from the outer periphery of the container mounting portion 85 and in the opposite direction. Elastic locking piece 89
Engages in the groove 87 of the guide portion 65, and normally restricts the movement of the guide portion 65 and the container mounting portion 85.
Then, when an appropriate external force is applied, the elastic locking piece 89 is elastically displaced, so that the container mounting portion 85 and the outer container 8
3 is slidable in the vertical direction.

According to this heating evaporation device 81, since the small groove 87 is formed in the guide portion 65 and the elastic locking piece 89 that abuts against this groove 87 is provided on the outer periphery of the container mounting portion 85, the locking is carried out. As the area becomes smaller, the elastic locking piece 89 elastically displaces the locking force to be small and reliable, the sliding movement becomes smooth, and good operability can be obtained.

Further, since the elastic locking piece 89 is brought into contact with the plurality of concave grooves 87 provided in the vertical direction, the vertical sliding movement can be carried out almost continuously.
The insertion depth of the heating element 31 and the liquid absorption core 25 can be finely adjusted. Furthermore, in this heating evaporation device 81, the outer container 83
Since the plug and the plug 27 are integrally formed, the plug 27
When the plug is inserted into the outlet 29, the outer container 83
Is supported by the outlet 29 and the outer container 83 and the container mounting portion 85 do not slide even if the outer container 83 is pressed except during operation, and the evaporation amount is erroneously changed. It is possible to prevent erroneous operation.

The slide structure including the first concave-convex portion 63 and the second concave-convex portion 67 described in the first embodiment, the slide structure including the concave groove 77 and the protrusion 79 described in the second embodiment,
The slide structure composed of the concave groove 87 and the elastic locking piece 89 described in the third embodiment is different from the other heating evaporation devices 73 and 7 respectively.
It goes without saying that it can be applied as a slide structure of Nos. 5 and 81.

[0033]

As described above in detail, according to the heating evaporation device of the present invention, the container mounting portion and the plug are integrally formed, while the outer container is formed separately from this. Since the mounting portion and the outer container can be moved by the guide portion, the transpiration amount can be adjusted very easily by operating only the outer container with the plug still inserted in the outlet. Since the container mounting portion and the outer container need only be divided into two parts to configure the moving mechanism, the moving mechanism can be configured by the number of parts. Moreover, since the heating element is fixed to the outer container, the risk of contact between the heating element and another member can be reduced. As a result,
The reliability of the device can be improved and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating evaporation device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the heating evaporation device of FIG.

3 is a cross-sectional view of a heating element included in the heating evaporation device of FIG.

FIG. 4 is a partial cross-sectional view of a heating evaporation device showing a second embodiment.

FIG. 5 is a sectional view of a heating evaporation device showing a third embodiment.

FIG. 6 is an enlarged view of a guide portion of the heating evaporation device shown in FIG.

FIG. 7 is a partial cross-sectional view of a conventional heating evaporation device.

[Explanation of symbols]

 21 Liquid Container 25 Liquid Absorption Core 27 Plug 29 Outlet 31 Heating Element 33 Outer Container 33 Outer Container 39 Container Mounting Part 63 First Uneven Part 65 Guide Part 67 Second Uneven Part 73, 75, 81 Heat Evaporation Device 87 Recessed Groove 89 Elastic Locking Piece

Claims (4)

[Claims] 1. A container mounting portion to which a liquid container having a liquid absorbing core, which is filled with a liquid and protrudes from the inside of the container to the outside of the container, and which is immersed in the liquid, is mounted, and the container mounting portion is fixed to the container mounting portion. A plug that is attached to and detachable from an outlet, an outer container that is attached to the container attachment portion via a guide portion and is movable in the central axis direction of the liquid absorption core, and a plug that is fixed to the outer container A heating and evaporating device comprising: a heating element that is heated near the liquid absorption core outside the liquid container by being energized from an outlet to vaporize and evaporate the liquid from the liquid absorption core. 2. A first concavo-convex portion formed on the outer periphery of the container mounting portion and having concavo-convex portions alternately formed in the direction of the central axis of the liquid absorbent core, and a first concavo-convex portion formed on the guide portion and facing the first concavo-convex portion. 2. A second concavo-convex portion, wherein the first concavo-convex portion and the second concavo-convex portion are brought into contact with each other so that the container mounting portion and the outer container can be moved in a stepwise manner. Heating evaporation device. 3. A container mounting portion to which a liquid container having a liquid absorbing core, which is filled with the liquid and protrudes from the inside of the container to the outside of the container, and which is immersed in the liquid in the container is mounted, and a guide to the container mounting portion. An outer container attached via a plug and movable in the direction of the central axis of the liquid absorbent core, a plug fixed to the outer container and detachable from an outlet, and fixed to the outer container via the plug. A heating and evaporating device comprising: a heating element that is heated near the liquid absorption core outside the liquid container by being energized from an outlet to vaporize and evaporate the liquid from the liquid absorption core. 4. A plurality of recessed grooves formed in the guide portion in the direction of the central axis of the liquid absorbent core, and a direction projecting from the outer periphery of the container mounting portion and protruding from the outer periphery of the container mounting portion, and a direction opposite thereto. And an elastic locking piece that is elastically displaceable, and the container mounting portion and the outer container can be moved stepwise by abutting the groove and the elastic locking piece. The heating evaporation device according to claim 1 or 3.